MyBB SQL Error

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
145 - Table './balkania_forum/mybb_sessions' is marked as crashed and should be repaired
Query:
REPLACE INTO mybb_sessions SET `uid`=0,`sid`='9acbb74f61e5614da812a2e097c7d364',`time`=1711626800,`ip`=X'36c41bab',`location`='/showthread.php?tid=309&action=lastpost',`useragent`='claudebot',`location1`=8,`location2`=309,`nopermission`=0